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knockdown herbicide

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Catalogue: GRDC Updates
Growers that have the weed seed bank under control will save herbicide costs; be able to use diverse tactics that would otherwise be cost prohibitive; and, by reducing the frequency of herbicide applications, will delay the onset of herbicide resistance... With any discussion on managing resistance we need to start with the basics and understand why we have the problem in the first place... Registration of high application rates by this technique may allow the control of resistant weeds that have survived a preceding application of a different mode of action...
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Catalogue: Ground Cover
Research by the Western Australian No-Tillage Farmers Association (WANTFA) shows effective use of pre-emergent herbicides when sowing wheat early in dry conditions can help the crop out-compete weeds and lift yields... Dr Minkey says the research indicated that Sakura and Boxer Gold helped control weeds when wheat was dry-seeded early, but the effectiveness of trifluralin was limited on heavy soils. ".. Overall, Sakura was the most effective in controlling germination of annual ryegrass in both early and late-sown wheat," Dr Minkey says...
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Catalogue: GRDC Updates
The aim of the study was to investigate weed management with pre-emergent herbicides and weed seed harvest management under a dry seeded wheat system... In a UWA trial located nearby results did show a small reduction in emergence from windrow burning and the HSD (Mike Walsh, personal communication)... WANTFA would like to acknowledge the Rural Industries Development Corporation (RIRDC), the National Adaptation and Mitigation Initiative (NAMI) funded by the Department of Agriculture and Food Western Australia, the Grains Research and Development Corporation and the Australian Government's Climate Change Research Program for funding the work...
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Catalogue: GRDC Updates (North)
Until such varieties are released, northern growers and advisers need to select varieties firstly on the basis of crown rot risk and then manage for stripe rust ... There is a risk of WSMV being spread through infected seed into new areas... We have not been able to determine an economic threshold for RGB in sorghum from these trials...
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Catalogue: GRDC Updates (South)
Until such varieties are released, northern growers and advisers need to select varieties firstly on the basis of crown rot risk and then manage for stripe rust ... There is a risk of WSMV being spread through infected seed into new areas... We have not been able to determine an economic threshold for RGB in sorghum from these trials...
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Catalogue: GRDC Publications
The results of the experiments have given Jeff the confidence to realise that he does have a viable, cost-effective alternative knockdown herbicide to glyphosate... Double knockdown (T 2.2b, page 128) Weather permitting, a double knockdown is implemented on resistant ryegrass paddocks prior to sowing using two non-selective herbicides (glyphosate followed by paraquat + diquat or paraquat, the choice being dependent upon the range of weeds present)... Helpful advice The Grays still enjoy the challenges and can see that they have made enough progress to feel they are being successful in managing a serious annual ryegrass problem...
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Catalogue: Ground Cover
Feathertop Rhodes grass has a short seed life, so focused control measures over two years could bring the weed in check... Pre-emergent herbicides have a role to play as part of an integrated weed management (IWM) strategy to control feathertop Rhodes grass (FTR), but they are not a standalone solution... While residual herbicides are far from the solution, Mr Daniel says, they are one of the critical tools in controlling a range of weed species, including FTR...
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Catalogue: GRDC Updates
Genetically modified herbicide tolerant crops have been grown commercially in North America since 1996... The USA has also had success but the lack of crop rotation, relying only on glyphosate for weed control and the continuous growing of herbicide resistant genetically modified crops is leading to major issues with glyphosate resistant weeds especially in cotton... Australian farmers should benefit from access to herbicide tolerant genetically modified canola varieties which should have better weed control and yields than the triazine tolerant varieties they now grow...
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Catalogue: Ground Cover
These investigated 13 herbicide alternatives for weed control in crop margin areas along fencelines, firebreaks and boundaries... Department of Agriculture and Food, WA (DAFWA) senior grains research officer Dr Sally Peltzer, who coordinates the WA adviser learning groups, says directing adviser and grower attention to the state of herbicide resistance along crop margin areas will prompt higher adoption of strategies to monitor and prevent its onset across whole properties... Surveys of growers after the trials and field days found many were prepared to use a double knock and spend more money - up to $50 per hectare - on weed control along fencelines to avoid the onset of glyphosate resistance...
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